What is Christ's role in salvation according to Arian theology?

This is related, but intended to be a more specific version of [this question](https://christianity.stackexchange.com/q/14573/20) . The answer provides a pretty concise, Sunday-school refutation to Arianism, but it assumes a Trinitarian view. From within an Arian theological framework, how does Christ fit into the work of human salvation? Please provide Biblical and historical references as appropriate.